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What is the calibration? Why does dust sensor need calibration?

Update: 2019-08-22 16:27 Source: LUFTMY

Sensor from production to marketing, an indispensable link is the calibration, through the calibration test pass the sensor is a truly qualified sensor.Because the sensor transforms other measured information into electrical signals or other required forms of information output according to a certain rule, such as the dust sensor for detecting PM2.5 concentration in the air, the consistency of results is very important. Only after calibration, can the consistency of sensor output be guaranteed.

The sensor is a kind of common but very important device, it is the device or device that senses the specified measured quantity and converts it into useful signal according to certain rule.For the sensor, according to the state of the input, the input can be divided into static and dynamic variables.We can get the static characteristics of the sensor according to the relationship between output and input under the stable state of each value.The main indicators of static characteristics of sensors are linearity, hysteresis, repeatability, sensitivity and accuracy.

The dynamic characteristics of the sensor refer to the response characteristics of the input varying with time.Dynamic characteristics are usually described by transfer function and other automatic control models.Generally, the signal received by the sensor has weak low-frequency signal, and sometimes the amplitude of external interference can exceed the measured signal. Therefore, only the calibrated sensor can confirm whether its output signal is normal or not.

Application fields of luftmy PM2.5 sensor: air purifier, air conditioner with purification function, PM2.5 detector, range hood, smoke alarm, fresh air system, dedicated PM2.5 sensor, air detector, etc.

LD15 laser dust sensor
LD15 laser dust sensor

TAGpm2.5 sensor sensor manufacturer particle sensor laser dust sensor